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In how many ways can 11 identical books ...

In how many ways can 11 identical books on English and 9 identical books on Maths be placed in a row on a shelf so that two books on Maths may not be together?

A

110

B

220

C

330

D

440

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT SSC-PERMUTATIONS & COMBINATIONS -EXERCISE (LEVEL-2)
  1. In how many ways three girls and nine boys can be seated in two vans, ...

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  2. In how many ways 5 plus (+) signs and 5 minus (-) signs be arranged in...

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  3. In how many ways can 11 identical books on English and 9 identical boo...

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  4. Find the total number of factors of 1680.

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  5. If P:Q= 8:15 and Q:R= 5:2, then find P:Q:R is equal to:

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  6. N a certain test, there are n question. In the test, 2^(n-i) students ...

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  7. The number of triangles whose vertices are at the vertices of a octago...

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  8. The number of ways in which we can select 5 numbers from the set of nu...

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  9. What will be the dublicate ratio of 5:9?

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  10. If n = ""^(k)C2, the value of ""^(n)C2 is:

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  11. The number of positive integral solutions of abc = 42 is:

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  12. There are three piles of identical red, blue and green balls and each ...

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  13. Between Shirdee and Khandala, there are 10 intermediate stations. The ...

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  14. In how many ways in which an examiner can assign 30 marks to 8 questio...

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  15. The exponent of 3 in 331! is :

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  16. The total number of six-digit natural numbers that can be made with...

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  17. The total number of seven digit numbers so that the sum of digits is e...

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  18. The number of ways in which 4 pictures can be hung from 6, picture nai...

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  19. The total number of ways of selecting 6 coins out of 10 one rupee coin...

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  20. A father with 8 children takes 3 at a time to the Zoological Gardens, ...

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